Water purification for locomotives



Get. 18, 19327. J. @STER-@FAG WATER PURIFIGATION FOR LOCOMOTIVES Original Filed July 10. 1922 Patented Oct. 18, 1932 UULIUS' OsTERTAG, Y0F

STUTTGART, GERMANY -WALTER KIURI'FCATION FOR -LOCOMlOTlIVESv .Driginal' application filed July .10, .1922, .Serial .'No .-No..1,700`,716, Januaryf29, 1929. Divided and 302,879.

' 'This application is a division of applica- .'tion Ser. No. 572,825 filed July 10, 1922, issued asP-atent'No.- 1,700,716, `Jan...29,'1929.

. My present invention relatesto amethod r...and apparatus for purifying thefeed water o ffor locomotive steam boilers. '.My invention is especially suitable for feed water having a high carbonate hardness, particu-k larly in cases where large quantities of in-v lo soluble salts are produced as a result of driv- 'A ingor1 carbon dioxide from the substances causing .carbonate hardness, in addition to any such saltspreviously present in the unpurilied feed water.

-.1115 One` object of my invention is toprovide continuous removal from the boiler of an amount .of solids during aperiod of time y.equal tothe amount introduced in solution in the feed water during the same period of time. l Y .Another object of my invention isto provide a simplified separator for effecting feedk water .purification in order to obtain a com# pact arrangement for use with 'locomotive lrand other portable steam boilers.

Athirdobject of my invention is^to con- 'servefthe heat andthe water blown ofi vfrom the boiler.

Another. object of my invention is topro- :.33 vide an improved liltering means Vparticularly adapted for locomotive use for remov- .ing the precipitated impurities.

An additional object is -toxprovidemeans for easily and expeditiously `cleaning vthe ,35 separator whenever such cleaning is necessary because of the relatively large quantity of precipitated sludge.

Other objects will be apparent from the ydetailed description following, in conjunc- 49 tion with the appended drawing, wherein:

Fig. lisa view of alocomotive and' tender, showing my improved separator positioned in the tender. Y

Fig. 2 is an enlarged vertical section of V4,5 the separator` on the line 2-2 of Fig. 3.

Fig. 3 is an enlarged elevation ofthe j front plate of the separator, showing the handle for agitating the contents of the separator. v .se Flg. 4 1s a view showing a modified ar- ...573,825, and. in Polonia February-=8, 1922. IEatent this application led August 29, 1928. Serial No.

rangement adapted for use with feed water having avhigh non-carbonate hardness, particularly where large quantities of easily soluble salts are produced as a result of chemical treatment for scale preventiomin.

chamber, in .order toeliminatethe hardness, Y

and'to carry off the separated `sludge tothe lfeed water reservoir or tender through a blow-off pipe. vA separator may `then `be placed withink the Vfeed Awater reservoir or tender to separate the sludge'from'the blowoif water, permitting the filtered` blow-olf water to pass vthrough the reservoir ortender and mix with the rf eed water.

manually controlled by any well-known type of control valve 11, leads into the separator 12 positioned in one wall of the tender 13.

The separator 12'is secured to the tender and is constructed of a frontplate 15 and a rear cup-shaped body Vportion 16 positioned on opposite sides of a circular opening inthe tender wall.` The front plate 15l hasran inlet port 17 cooperating with vthe 'blo'wo'H:1pi pe 10; the body portion 16 has a s'teamoutlet port 18, and a water outlet 19.

Positioned within the rear end of the body portion 16 is iilter 20 having filtering material A21 securely heldbetween two plates 22 provided with water outletperforations 23. Sludge-containing water is continuouslyor intermittently, as desired, blown oli on the lower portion of the boiler through the pipe 10 and passes through inlet port 17 into'the interior of the separator 12'; the reduction from boiler pressure to atmospheric pressure causes vaporiaztion of a large portion of the blow-off:| water. Y'

The steam'formed escapes through theiou'tlet port 18,fthis port lbeing dimensioned to maintain suflicientY pressure within theseparator s'o'as to slowly Vforce the remaining blow-off water through filter 20, 'the perform Referring to Fig. 1, a boiler blow-0Ev 10,v

yrigorous requirements of portable boiler the interior of the separator, thus reniov tions 23 permitting free passage of the liiltered Water into the tender through opening 19.

A rod 24 is rotatably positioned in a bearing member 25 extending through and securely fastened to the front plate 15, a handle 26 providing means for turning' the rod 2st and thus rotating a paddle 27 fixed thereon. 1f desirable, the filter 2O may also be rotated at the same time, but preferably the lter mains fixed in position during the rotation of the paddle. A valve-controlled drain 28 is provided at the lower portion of the front plate 15.

The steam passing through steam outlet 1S is condensed vvitliin the Water in the tenoer; the feed Water thus receives the steam and the filtered blow-off Water, the sludge remaining Within the interior of the separator 12. rlhbody portion 1G is continuously in contac' with the cool feed Water and helps to dense the steam. The outlet 18 and the cooling effect of the boc y portion 16 co-operate to prevent a rise of steam pressure to a point Where the sludge might be forced through the filter into the feed Water.

The separator 12 must necessarily remain iii service for long periods of time under eration.Y Handle 26 may, therefore, be p i odically turned to agitatethe sludge Witi any sludge deposited on the filter surA and on the Walls of the body portion 15 and suspending the sludge Within the Water in the separator interior. rlhe drain pipe 28 is then opened until clear iva-ter appears, thus cleaning and rinsing the separater preparatory to additional service.

Where the amount of easily soluble salts is so high that it is preferable to dispense -with the filtration and conserve as much heat as possible by direct heat transfer, the modified arrangement shown in Fig. l isemployed. The blow-off pipe 10 is connected to condenser vvorm 29 located Within the tender 1E, the blow-off Water giving up its heat to the surrounding tender Water and passing l through the Worm to an outlet 30, positioned in any convenient location, to Waste. iny Well-known form of heat transfer apparatus may be utilized instead of the Worm 29. lin

using this modification, it is preferable to continuously blow olf Water in order to continuously maintain the concentration Within the boiler at a desirable lovv point by removing approximately the same amount of solids during a period of time as is introduced in solution in the feed Water during the saine period of time. Chemicals are added to the feed Water Whenever the tender is filled.

While l have herein shown and described preferable embodiments of my invention, l: do not Wish to be understood as limiting myself to thel precise details illustrated, since changes may be made in the method and the into the supply tank.

2. e. continuous purification system for portable boil-ers, comprising a feed Water supply tanl, a sludge separator therein, a boiler low-ofi connection for conducting sludgeiining blow-off Water 'to saidseparator, et in the separator, a filter Within n teroutlet in the separator ,r permitting enit oi the. filtered Twater into farli, ator for agitating the the senarator, and a drain for the co. p

parator. v

3. ln combination,a locomotive boiler, a tender containing feed Water, aV blow-o pipe connected to the boiler, a sluc ge separator Within the ter and in heat exchange Ycon- 'tactv v `fh the feed Water, valve means for regr-.latabl,VY reducing the pressure of the blowod wat r entering the separator to generate am, said steam and sludge-separated blowou vvL er being added to the 'feed Water.

e. il. sind inlet ao ge separator comprising a 'casing ted to be connectedto a ooiler blow-oil' pipe, a restricted steam outlet, a relatively large Water outlet, and a filter covering` said outlet. Y

5. A sludge separator comprising a casing an inlet adapted to be connected to a boiler blow-oLL pipe, a restricted steam outlet, a rela en l J' Water outlet, a filter covering A L said outlet, an agitator for agitating the contents Within the separator, and a drain connection for the separator.

6. A sluc separator comprising a casing an inlet conc uit leading into said casing and adapted to be connected to a boiler blow-ofi pipe, a res l Water outlet, a filter covering said outlet, an agitator for agitating the contents Within the separator,inanual means for oper- ;i g the agitator, and a drain connection for agie separator.

ln testimony whereof l signature. f

hereunto affix my JULTTS OSTEBTAG.

icted steam outlet, a relatively. 

